I am concerned that digital technolgy may not last as long as traditional film prints..has any thought been given to longevity and preservation issues, or are film-makers been to dazzled by the wonder of the present?

The good news (and I'm no expert) is that digital storage space is plentiful. Slap these puppies on redundant hard drives or DVD ROM's and they'll last forever barring EMP's or world-wide catastrophe's (I've been watching too much History Channel stuff about giant meteors and cosmic radiation blasts from black holes). Good... Bad..... I'm the guy with the gun.